Sash-fastener



(No Model.) 2 SheetsSheet 1.

G GIBSON SASH PASTENER.

Patented Apr. 19, 1892.

/W, & MHZ. 3 u @W o. N

film 110111 W 35? 2 Sheets-Sheet 2 (No Model.)

G. GIBSON.

SASH PASTENBR.

o. 473,418. Patented Apr. 19, 1892.

UNITED STATES PATENT ()FFmE.

GEROLT GIBSON, OF ST. LOUIS, MISSOURI.

SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent No. 473,418, dated April 19, 1892.

Serial No. 400,801. (No model.)

To all whom it may concern.-

Be it known that I, GEROLT GIBSON, a citizen of the United States, residing in the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in WVindow-Sash Locks; and [do declare the following to be a full, clear, and exact descriptlou of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to window-sash locks; and my said invention consists in certain novel details of construction and arrangement of the parts composing the same, as and for the purposes as will be hereinafter more fully described, and forming the subj act-matter of the annexed claim.

The object of my invention is to provide a lock for the meeting-rails of windows which will be simple in construction, practical in operation, and so arranged that the meeting-rails will, when the window is closed, be automatically locked together and also to the windowcasing, and in such a manner that the lowering of the upper sash is prevented, as also the rattling of both sashes.

I11 carrying out my invention I proceed as follows, reference being had to the accompanying drawings, forminga part hereof, and in which drawings Figure l is a view in front elevation, and Fig. 7 is a perspective view, of a portion of a window and its adjoining casing, showing my lock applied in position thereon. Fig. 2 is a detail perspective view, in partial section, of the portion of the lock that is secured to the bead or portion of the window-casing. Fig. 3 is a similar View of the portion of the lock that is attached to the upper sash, and. Fig. 4 is a similar view of the part of the lock that is secured to the top of the meeting-rail of the lower sash. Fig. 5 is a view in perspective of the locking-tongue; and Fig. 6 is a similar view of the part of the lock to which the said tongue is pivoted, showing the same in position.

The letter A designates the head or a portion of the side of the frame or casing of the window; B, the upper and O the lower sash thereof.

My window-sash lock is composed of four parts, each of which is of novel configuration, one of which is stationary, being secured to a fixed portion of the window-casing, a second is attached to the face of the side rail of the upper sash and moves therewith, and a third part is attached to the top edge of the meeting-rail of the lower sash and moves therewith, the several parts being in proper juxtae position to each other as to accomplish the desired results.

The letter D designates the part of the lock that is attached to the vertical side bead of the window-casing, which part is slotted, as at d, the upper edge thereof being beveled, as at cl, for a purpose as will presently appear, and has pivoted to its outer curved end a tongue d having a beveled front edge, as at d E indicates the member of the lock that is secured to the top of the meeting-rail of the lower sash, and this part of the lock has a curved end, as at e, that terminates in a short depending projection, as at e, having a beveled base, as at 6 corresponding to the bevel of the edges cl of the slot 01 in the member D, the said projection 6' being of a size relative to the slot 01 of part D as to closely fit the same.

F indicates the member of the lock that is secured to the face of the side rail of the upper sash, and this part F has a forwardly-projecting lug f, whose under surface is beveled, as at f, and one edge of the base thereof is prolonged, as at f When in position, as shown in Fig. 1, the depending projection e of the member E enters the slot d of the part D. The two meeting-rails of the window are therefore held together and prevented from rattling.

To effect the locking of the parts, the lower sash must be raised slightly, so as to bring the part E out of engagement with the part D. As the upper sash is raised to its normal position, the member F, fixed to the vertical side rail of said sash, is brought into engagement with the tongue d of the member D,the curved top edge f of the part F meeting the curved lower edge of the said tongue d and forcing the same back in the slot (1 of the part D and permitting the passage past said tongue of the member F, after which the tongue (2 swings forward and engages beneath the projection f of the part F, the beveled surface f of said part F engaging the beveled edge (1 of the tongue (1 The tongue (I of the stationary member D of the lock is thus confined between the projectionfand basef of the member F and the rattling of the upper sash prevented, the lower sash being now lowered to its normal position, during which movement of the sash the depending projection e of the member E enters the slot (l' of the stationary member D, and when so entering said slot said projection e engages the rear edge of the tongue (Z and forces said tongue tight in place against the member F, a shoulder (1, formed at the top end of the slot (1, limiting the outward movement of the tongue. Thus the member F on the upper sash is locked to the stationary member I) and the rattling as well as the lowering of the upper sash is prevented.

Before the upper sash can be lowered the lower sash must be raised, so as to disengage the member E from the member D and permit the tongue (Z to swing free,.when the upper sash may be lowered.

A look to prevent the raising of the lower sash and intended for use in connection with theforegoing-described lock forms the subj cot-matter of a separate application for patent filed simultaneously with this application.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The window-sash lock described, composed of the stationary member secured to the side of the window-casing and having a central slot and pivoted tongue,a member secured to the uppersash, having a projecting lug adapted to engage the tongue of the stationary member, and a member secured to the top of the meetin g-rail of the lower sash, having a bent upper end and depending projection adapted to enter the slot of the stationary member, substantially as and for the purposes specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEROL'I GIBSON.

\Vitnesses:

LOUIS D. P1001, 0. II. P. GRUNDON. 

